1 /* 2 * NXP Wireless LAN device driver: HW/FW Initialization 3 * 4 * Copyright 2011-2020 NXP 5 * 6 * This software file (the "File") is distributed by NXP 7 * under the terms of the GNU General Public License Version 2, June 1991 8 * (the "License"). You may use, redistribute and/or modify this File in 9 * accordance with the terms and conditions of the License, a copy of which 10 * is available by writing to the Free Software Foundation, Inc., 11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the 12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. 13 * 14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE 16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about 17 * this warranty disclaimer. 18 */ 19 20 #include "decl.h" 21 #include "ioctl.h" 22 #include "util.h" 23 #include "fw.h" 24 #include "main.h" 25 #include "wmm.h" 26 #include "11n.h" 27 28 /* 29 * This function adds a BSS priority table to the table list. 30 * 31 * The function allocates a new BSS priority table node and adds it to 32 * the end of BSS priority table list, kept in driver memory. 33 */ 34 static int mwifiex_add_bss_prio_tbl(struct mwifiex_private *priv) 35 { 36 struct mwifiex_adapter *adapter = priv->adapter; 37 struct mwifiex_bss_prio_node *bss_prio; 38 struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl; 39 40 bss_prio = kzalloc(sizeof(struct mwifiex_bss_prio_node), GFP_KERNEL); 41 if (!bss_prio) 42 return -ENOMEM; 43 44 bss_prio->priv = priv; 45 INIT_LIST_HEAD(&bss_prio->list); 46 47 spin_lock_bh(&tbl[priv->bss_priority].bss_prio_lock); 48 list_add_tail(&bss_prio->list, &tbl[priv->bss_priority].bss_prio_head); 49 spin_unlock_bh(&tbl[priv->bss_priority].bss_prio_lock); 50 51 return 0; 52 } 53 54 static void wakeup_timer_fn(struct timer_list *t) 55 { 56 struct mwifiex_adapter *adapter = from_timer(adapter, t, wakeup_timer); 57 58 mwifiex_dbg(adapter, ERROR, "Firmware wakeup failed\n"); 59 adapter->hw_status = MWIFIEX_HW_STATUS_RESET; 60 mwifiex_cancel_all_pending_cmd(adapter); 61 62 if (adapter->if_ops.card_reset) 63 adapter->if_ops.card_reset(adapter); 64 } 65 66 static void fw_dump_timer_fn(struct timer_list *t) 67 { 68 struct mwifiex_adapter *adapter = from_timer(adapter, t, devdump_timer); 69 70 mwifiex_upload_device_dump(adapter); 71 } 72 73 /* 74 * This function initializes the private structure and sets default 75 * values to the members. 76 * 77 * Additionally, it also initializes all the locks and sets up all the 78 * lists. 79 */ 80 int mwifiex_init_priv(struct mwifiex_private *priv) 81 { 82 u32 i; 83 84 priv->media_connected = false; 85 eth_broadcast_addr(priv->curr_addr); 86 priv->port_open = false; 87 priv->usb_port = MWIFIEX_USB_EP_DATA; 88 priv->pkt_tx_ctrl = 0; 89 priv->bss_mode = NL80211_IFTYPE_UNSPECIFIED; 90 priv->data_rate = 0; /* Initially indicate the rate as auto */ 91 priv->is_data_rate_auto = true; 92 priv->bcn_avg_factor = DEFAULT_BCN_AVG_FACTOR; 93 priv->data_avg_factor = DEFAULT_DATA_AVG_FACTOR; 94 95 priv->sec_info.wep_enabled = 0; 96 priv->sec_info.authentication_mode = NL80211_AUTHTYPE_OPEN_SYSTEM; 97 priv->sec_info.encryption_mode = 0; 98 for (i = 0; i < ARRAY_SIZE(priv->wep_key); i++) 99 memset(&priv->wep_key[i], 0, sizeof(struct mwifiex_wep_key)); 100 priv->wep_key_curr_index = 0; 101 priv->curr_pkt_filter = HostCmd_ACT_MAC_DYNAMIC_BW_ENABLE | 102 HostCmd_ACT_MAC_RX_ON | HostCmd_ACT_MAC_TX_ON | 103 HostCmd_ACT_MAC_ETHERNETII_ENABLE; 104 105 priv->beacon_period = 100; /* beacon interval */ 106 priv->attempted_bss_desc = NULL; 107 memset(&priv->curr_bss_params, 0, sizeof(priv->curr_bss_params)); 108 priv->listen_interval = MWIFIEX_DEFAULT_LISTEN_INTERVAL; 109 110 memset(&priv->prev_ssid, 0, sizeof(priv->prev_ssid)); 111 memset(&priv->prev_bssid, 0, sizeof(priv->prev_bssid)); 112 memset(&priv->assoc_rsp_buf, 0, sizeof(priv->assoc_rsp_buf)); 113 priv->assoc_rsp_size = 0; 114 priv->adhoc_channel = DEFAULT_AD_HOC_CHANNEL; 115 priv->atim_window = 0; 116 priv->adhoc_state = ADHOC_IDLE; 117 priv->tx_power_level = 0; 118 priv->max_tx_power_level = 0; 119 priv->min_tx_power_level = 0; 120 priv->tx_ant = 0; 121 priv->rx_ant = 0; 122 priv->tx_rate = 0; 123 priv->rxpd_htinfo = 0; 124 priv->rxpd_rate = 0; 125 priv->rate_bitmap = 0; 126 priv->data_rssi_last = 0; 127 priv->data_rssi_avg = 0; 128 priv->data_nf_avg = 0; 129 priv->data_nf_last = 0; 130 priv->bcn_rssi_last = 0; 131 priv->bcn_rssi_avg = 0; 132 priv->bcn_nf_avg = 0; 133 priv->bcn_nf_last = 0; 134 memset(&priv->wpa_ie, 0, sizeof(priv->wpa_ie)); 135 memset(&priv->aes_key, 0, sizeof(priv->aes_key)); 136 priv->wpa_ie_len = 0; 137 priv->wpa_is_gtk_set = false; 138 139 memset(&priv->assoc_tlv_buf, 0, sizeof(priv->assoc_tlv_buf)); 140 priv->assoc_tlv_buf_len = 0; 141 memset(&priv->wps, 0, sizeof(priv->wps)); 142 memset(&priv->gen_ie_buf, 0, sizeof(priv->gen_ie_buf)); 143 priv->gen_ie_buf_len = 0; 144 memset(priv->vs_ie, 0, sizeof(priv->vs_ie)); 145 146 priv->wmm_required = true; 147 priv->wmm_enabled = false; 148 priv->wmm_qosinfo = 0; 149 priv->curr_bcn_buf = NULL; 150 priv->curr_bcn_size = 0; 151 priv->wps_ie = NULL; 152 priv->wps_ie_len = 0; 153 priv->ap_11n_enabled = 0; 154 memset(&priv->roc_cfg, 0, sizeof(priv->roc_cfg)); 155 156 priv->scan_block = false; 157 158 priv->csa_chan = 0; 159 priv->csa_expire_time = 0; 160 priv->del_list_idx = 0; 161 priv->hs2_enabled = false; 162 priv->check_tdls_tx = false; 163 memcpy(priv->tos_to_tid_inv, tos_to_tid_inv, MAX_NUM_TID); 164 165 mwifiex_init_11h_params(priv); 166 167 return mwifiex_add_bss_prio_tbl(priv); 168 } 169 170 /* 171 * This function allocates buffers for members of the adapter 172 * structure. 173 * 174 * The memory allocated includes scan table, command buffers, and 175 * sleep confirm command buffer. In addition, the queues are 176 * also initialized. 177 */ 178 static int mwifiex_allocate_adapter(struct mwifiex_adapter *adapter) 179 { 180 int ret; 181 182 /* Allocate command buffer */ 183 ret = mwifiex_alloc_cmd_buffer(adapter); 184 if (ret) { 185 mwifiex_dbg(adapter, ERROR, 186 "%s: failed to alloc cmd buffer\n", 187 __func__); 188 return -1; 189 } 190 191 adapter->sleep_cfm = 192 dev_alloc_skb(sizeof(struct mwifiex_opt_sleep_confirm) 193 + INTF_HEADER_LEN); 194 195 if (!adapter->sleep_cfm) { 196 mwifiex_dbg(adapter, ERROR, 197 "%s: failed to alloc sleep cfm\t" 198 " cmd buffer\n", __func__); 199 return -1; 200 } 201 skb_reserve(adapter->sleep_cfm, INTF_HEADER_LEN); 202 203 return 0; 204 } 205 206 /* 207 * This function initializes the adapter structure and sets default 208 * values to the members of adapter. 209 * 210 * This also initializes the WMM related parameters in the driver private 211 * structures. 212 */ 213 static void mwifiex_init_adapter(struct mwifiex_adapter *adapter) 214 { 215 struct mwifiex_opt_sleep_confirm *sleep_cfm_buf = NULL; 216 217 skb_put(adapter->sleep_cfm, sizeof(struct mwifiex_opt_sleep_confirm)); 218 219 adapter->cmd_sent = false; 220 221 if (adapter->iface_type == MWIFIEX_SDIO) 222 adapter->data_sent = true; 223 else 224 adapter->data_sent = false; 225 226 if (adapter->iface_type == MWIFIEX_USB) 227 adapter->intf_hdr_len = 0; 228 else 229 adapter->intf_hdr_len = INTF_HEADER_LEN; 230 231 adapter->cmd_resp_received = false; 232 adapter->event_received = false; 233 adapter->data_received = false; 234 235 clear_bit(MWIFIEX_SURPRISE_REMOVED, &adapter->work_flags); 236 237 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 238 239 adapter->ps_mode = MWIFIEX_802_11_POWER_MODE_CAM; 240 adapter->ps_state = PS_STATE_AWAKE; 241 adapter->need_to_wakeup = false; 242 243 adapter->scan_mode = HostCmd_BSS_MODE_ANY; 244 adapter->specific_scan_time = MWIFIEX_SPECIFIC_SCAN_CHAN_TIME; 245 adapter->active_scan_time = MWIFIEX_ACTIVE_SCAN_CHAN_TIME; 246 adapter->passive_scan_time = MWIFIEX_PASSIVE_SCAN_CHAN_TIME; 247 adapter->scan_chan_gap_time = MWIFIEX_DEF_SCAN_CHAN_GAP_TIME; 248 249 adapter->scan_probes = 1; 250 251 adapter->multiple_dtim = 1; 252 253 adapter->local_listen_interval = 0; /* default value in firmware 254 will be used */ 255 256 adapter->is_deep_sleep = false; 257 258 adapter->delay_null_pkt = false; 259 adapter->delay_to_ps = 1000; 260 adapter->enhanced_ps_mode = PS_MODE_AUTO; 261 262 adapter->gen_null_pkt = false; /* Disable NULL Pkg generation by 263 default */ 264 adapter->pps_uapsd_mode = false; /* Disable pps/uapsd mode by 265 default */ 266 adapter->pm_wakeup_card_req = false; 267 268 adapter->pm_wakeup_fw_try = false; 269 270 adapter->curr_tx_buf_size = MWIFIEX_TX_DATA_BUF_SIZE_2K; 271 272 clear_bit(MWIFIEX_IS_HS_CONFIGURED, &adapter->work_flags); 273 adapter->hs_cfg.conditions = cpu_to_le32(HS_CFG_COND_DEF); 274 adapter->hs_cfg.gpio = HS_CFG_GPIO_DEF; 275 adapter->hs_cfg.gap = HS_CFG_GAP_DEF; 276 adapter->hs_activated = false; 277 278 memset(adapter->event_body, 0, sizeof(adapter->event_body)); 279 adapter->hw_dot_11n_dev_cap = 0; 280 adapter->hw_dev_mcs_support = 0; 281 adapter->sec_chan_offset = 0; 282 adapter->adhoc_11n_enabled = false; 283 284 mwifiex_wmm_init(adapter); 285 atomic_set(&adapter->tx_hw_pending, 0); 286 287 sleep_cfm_buf = (struct mwifiex_opt_sleep_confirm *) 288 adapter->sleep_cfm->data; 289 memset(sleep_cfm_buf, 0, adapter->sleep_cfm->len); 290 sleep_cfm_buf->command = cpu_to_le16(HostCmd_CMD_802_11_PS_MODE_ENH); 291 sleep_cfm_buf->size = cpu_to_le16(adapter->sleep_cfm->len); 292 sleep_cfm_buf->result = 0; 293 sleep_cfm_buf->action = cpu_to_le16(SLEEP_CONFIRM); 294 sleep_cfm_buf->resp_ctrl = cpu_to_le16(RESP_NEEDED); 295 296 memset(&adapter->sleep_params, 0, sizeof(adapter->sleep_params)); 297 memset(&adapter->sleep_period, 0, sizeof(adapter->sleep_period)); 298 adapter->tx_lock_flag = false; 299 adapter->null_pkt_interval = 0; 300 adapter->fw_bands = 0; 301 adapter->config_bands = 0; 302 adapter->adhoc_start_band = 0; 303 adapter->scan_channels = NULL; 304 adapter->fw_release_number = 0; 305 adapter->fw_cap_info = 0; 306 memset(&adapter->upld_buf, 0, sizeof(adapter->upld_buf)); 307 adapter->event_cause = 0; 308 adapter->region_code = 0; 309 adapter->bcn_miss_time_out = DEFAULT_BCN_MISS_TIMEOUT; 310 adapter->adhoc_awake_period = 0; 311 memset(&adapter->arp_filter, 0, sizeof(adapter->arp_filter)); 312 adapter->arp_filter_size = 0; 313 adapter->max_mgmt_ie_index = MAX_MGMT_IE_INDEX; 314 adapter->mfg_mode = mfg_mode; 315 adapter->key_api_major_ver = 0; 316 adapter->key_api_minor_ver = 0; 317 eth_broadcast_addr(adapter->perm_addr); 318 adapter->iface_limit.sta_intf = MWIFIEX_MAX_STA_NUM; 319 adapter->iface_limit.uap_intf = MWIFIEX_MAX_UAP_NUM; 320 adapter->iface_limit.p2p_intf = MWIFIEX_MAX_P2P_NUM; 321 adapter->active_scan_triggered = false; 322 timer_setup(&adapter->wakeup_timer, wakeup_timer_fn, 0); 323 adapter->devdump_len = 0; 324 timer_setup(&adapter->devdump_timer, fw_dump_timer_fn, 0); 325 } 326 327 /* 328 * This function sets trans_start per tx_queue 329 */ 330 void mwifiex_set_trans_start(struct net_device *dev) 331 { 332 int i; 333 334 for (i = 0; i < dev->num_tx_queues; i++) 335 netdev_get_tx_queue(dev, i)->trans_start = jiffies; 336 337 netif_trans_update(dev); 338 } 339 340 /* 341 * This function wakes up all queues in net_device 342 */ 343 void mwifiex_wake_up_net_dev_queue(struct net_device *netdev, 344 struct mwifiex_adapter *adapter) 345 { 346 spin_lock_bh(&adapter->queue_lock); 347 netif_tx_wake_all_queues(netdev); 348 spin_unlock_bh(&adapter->queue_lock); 349 } 350 351 /* 352 * This function stops all queues in net_device 353 */ 354 void mwifiex_stop_net_dev_queue(struct net_device *netdev, 355 struct mwifiex_adapter *adapter) 356 { 357 spin_lock_bh(&adapter->queue_lock); 358 netif_tx_stop_all_queues(netdev); 359 spin_unlock_bh(&adapter->queue_lock); 360 } 361 362 /* 363 * This function invalidates the list heads. 364 */ 365 static void mwifiex_invalidate_lists(struct mwifiex_adapter *adapter) 366 { 367 struct mwifiex_private *priv; 368 s32 i, j; 369 370 list_del(&adapter->cmd_free_q); 371 list_del(&adapter->cmd_pending_q); 372 list_del(&adapter->scan_pending_q); 373 374 for (i = 0; i < adapter->priv_num; i++) 375 list_del(&adapter->bss_prio_tbl[i].bss_prio_head); 376 377 for (i = 0; i < adapter->priv_num; i++) { 378 if (adapter->priv[i]) { 379 priv = adapter->priv[i]; 380 for (j = 0; j < MAX_NUM_TID; ++j) 381 list_del(&priv->wmm.tid_tbl_ptr[j].ra_list); 382 list_del(&priv->tx_ba_stream_tbl_ptr); 383 list_del(&priv->rx_reorder_tbl_ptr); 384 list_del(&priv->sta_list); 385 list_del(&priv->auto_tdls_list); 386 } 387 } 388 } 389 390 /* 391 * This function performs cleanup for adapter structure. 392 * 393 * The cleanup is done recursively, by canceling all pending 394 * commands, freeing the member buffers previously allocated 395 * (command buffers, scan table buffer, sleep confirm command 396 * buffer), stopping the timers and calling the cleanup routines 397 * for every interface. 398 */ 399 static void 400 mwifiex_adapter_cleanup(struct mwifiex_adapter *adapter) 401 { 402 del_timer(&adapter->wakeup_timer); 403 del_timer_sync(&adapter->devdump_timer); 404 mwifiex_cancel_all_pending_cmd(adapter); 405 wake_up_interruptible(&adapter->cmd_wait_q.wait); 406 wake_up_interruptible(&adapter->hs_activate_wait_q); 407 } 408 409 void mwifiex_free_cmd_buffers(struct mwifiex_adapter *adapter) 410 { 411 mwifiex_invalidate_lists(adapter); 412 413 /* Free command buffer */ 414 mwifiex_dbg(adapter, INFO, "info: free cmd buffer\n"); 415 mwifiex_free_cmd_buffer(adapter); 416 417 if (adapter->sleep_cfm) 418 dev_kfree_skb_any(adapter->sleep_cfm); 419 } 420 421 /* 422 * This function intializes the lock variables and 423 * the list heads. 424 */ 425 int mwifiex_init_lock_list(struct mwifiex_adapter *adapter) 426 { 427 struct mwifiex_private *priv; 428 s32 i, j; 429 430 spin_lock_init(&adapter->int_lock); 431 spin_lock_init(&adapter->main_proc_lock); 432 spin_lock_init(&adapter->mwifiex_cmd_lock); 433 spin_lock_init(&adapter->queue_lock); 434 for (i = 0; i < adapter->priv_num; i++) { 435 if (adapter->priv[i]) { 436 priv = adapter->priv[i]; 437 spin_lock_init(&priv->wmm.ra_list_spinlock); 438 spin_lock_init(&priv->curr_bcn_buf_lock); 439 spin_lock_init(&priv->sta_list_spinlock); 440 spin_lock_init(&priv->auto_tdls_lock); 441 } 442 } 443 444 /* Initialize cmd_free_q */ 445 INIT_LIST_HEAD(&adapter->cmd_free_q); 446 /* Initialize cmd_pending_q */ 447 INIT_LIST_HEAD(&adapter->cmd_pending_q); 448 /* Initialize scan_pending_q */ 449 INIT_LIST_HEAD(&adapter->scan_pending_q); 450 451 spin_lock_init(&adapter->cmd_free_q_lock); 452 spin_lock_init(&adapter->cmd_pending_q_lock); 453 spin_lock_init(&adapter->scan_pending_q_lock); 454 spin_lock_init(&adapter->rx_proc_lock); 455 456 skb_queue_head_init(&adapter->rx_data_q); 457 skb_queue_head_init(&adapter->tx_data_q); 458 459 for (i = 0; i < adapter->priv_num; ++i) { 460 INIT_LIST_HEAD(&adapter->bss_prio_tbl[i].bss_prio_head); 461 spin_lock_init(&adapter->bss_prio_tbl[i].bss_prio_lock); 462 } 463 464 for (i = 0; i < adapter->priv_num; i++) { 465 if (!adapter->priv[i]) 466 continue; 467 priv = adapter->priv[i]; 468 for (j = 0; j < MAX_NUM_TID; ++j) 469 INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[j].ra_list); 470 INIT_LIST_HEAD(&priv->tx_ba_stream_tbl_ptr); 471 INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); 472 INIT_LIST_HEAD(&priv->sta_list); 473 INIT_LIST_HEAD(&priv->auto_tdls_list); 474 skb_queue_head_init(&priv->tdls_txq); 475 skb_queue_head_init(&priv->bypass_txq); 476 477 spin_lock_init(&priv->tx_ba_stream_tbl_lock); 478 spin_lock_init(&priv->rx_reorder_tbl_lock); 479 480 spin_lock_init(&priv->ack_status_lock); 481 idr_init(&priv->ack_status_frames); 482 } 483 484 return 0; 485 } 486 487 /* 488 * This function initializes the firmware. 489 * 490 * The following operations are performed sequentially - 491 * - Allocate adapter structure 492 * - Initialize the adapter structure 493 * - Initialize the private structure 494 * - Add BSS priority tables to the adapter structure 495 * - For each interface, send the init commands to firmware 496 * - Send the first command in command pending queue, if available 497 */ 498 int mwifiex_init_fw(struct mwifiex_adapter *adapter) 499 { 500 int ret; 501 struct mwifiex_private *priv; 502 u8 i, first_sta = true; 503 int is_cmd_pend_q_empty; 504 505 adapter->hw_status = MWIFIEX_HW_STATUS_INITIALIZING; 506 507 /* Allocate memory for member of adapter structure */ 508 ret = mwifiex_allocate_adapter(adapter); 509 if (ret) 510 return -1; 511 512 /* Initialize adapter structure */ 513 mwifiex_init_adapter(adapter); 514 515 for (i = 0; i < adapter->priv_num; i++) { 516 if (adapter->priv[i]) { 517 priv = adapter->priv[i]; 518 519 /* Initialize private structure */ 520 ret = mwifiex_init_priv(priv); 521 if (ret) 522 return -1; 523 } 524 } 525 if (adapter->mfg_mode) { 526 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 527 ret = -EINPROGRESS; 528 } else { 529 for (i = 0; i < adapter->priv_num; i++) { 530 if (adapter->priv[i]) { 531 ret = mwifiex_sta_init_cmd(adapter->priv[i], 532 first_sta, true); 533 if (ret == -1) 534 return -1; 535 536 first_sta = false; 537 } 538 539 540 541 } 542 } 543 544 spin_lock_bh(&adapter->cmd_pending_q_lock); 545 is_cmd_pend_q_empty = list_empty(&adapter->cmd_pending_q); 546 spin_unlock_bh(&adapter->cmd_pending_q_lock); 547 if (!is_cmd_pend_q_empty) { 548 /* Send the first command in queue and return */ 549 if (mwifiex_main_process(adapter) != -1) 550 ret = -EINPROGRESS; 551 } else { 552 adapter->hw_status = MWIFIEX_HW_STATUS_READY; 553 } 554 555 return ret; 556 } 557 558 /* 559 * This function deletes the BSS priority tables. 560 * 561 * The function traverses through all the allocated BSS priority nodes 562 * in every BSS priority table and frees them. 563 */ 564 static void mwifiex_delete_bss_prio_tbl(struct mwifiex_private *priv) 565 { 566 int i; 567 struct mwifiex_adapter *adapter = priv->adapter; 568 struct mwifiex_bss_prio_node *bssprio_node, *tmp_node; 569 struct list_head *head; 570 spinlock_t *lock; /* bss priority lock */ 571 572 for (i = 0; i < adapter->priv_num; ++i) { 573 head = &adapter->bss_prio_tbl[i].bss_prio_head; 574 lock = &adapter->bss_prio_tbl[i].bss_prio_lock; 575 mwifiex_dbg(adapter, INFO, 576 "info: delete BSS priority table,\t" 577 "bss_type = %d, bss_num = %d, i = %d,\t" 578 "head = %p\n", 579 priv->bss_type, priv->bss_num, i, head); 580 581 { 582 spin_lock_bh(lock); 583 list_for_each_entry_safe(bssprio_node, tmp_node, head, 584 list) { 585 if (bssprio_node->priv == priv) { 586 mwifiex_dbg(adapter, INFO, 587 "info: Delete\t" 588 "node %p, next = %p\n", 589 bssprio_node, tmp_node); 590 list_del(&bssprio_node->list); 591 kfree(bssprio_node); 592 } 593 } 594 spin_unlock_bh(lock); 595 } 596 } 597 } 598 599 /* 600 * This function frees the private structure, including cleans 601 * up the TX and RX queues and frees the BSS priority tables. 602 */ 603 void mwifiex_free_priv(struct mwifiex_private *priv) 604 { 605 mwifiex_clean_txrx(priv); 606 mwifiex_delete_bss_prio_tbl(priv); 607 mwifiex_free_curr_bcn(priv); 608 } 609 610 /* 611 * This function is used to shutdown the driver. 612 * 613 * The following operations are performed sequentially - 614 * - Check if already shut down 615 * - Make sure the main process has stopped 616 * - Clean up the Tx and Rx queues 617 * - Delete BSS priority tables 618 * - Free the adapter 619 * - Notify completion 620 */ 621 void 622 mwifiex_shutdown_drv(struct mwifiex_adapter *adapter) 623 { 624 struct mwifiex_private *priv; 625 s32 i; 626 struct sk_buff *skb; 627 628 /* mwifiex already shutdown */ 629 if (adapter->hw_status == MWIFIEX_HW_STATUS_NOT_READY) 630 return; 631 632 /* cancel current command */ 633 if (adapter->curr_cmd) { 634 mwifiex_dbg(adapter, WARN, 635 "curr_cmd is still in processing\n"); 636 del_timer_sync(&adapter->cmd_timer); 637 mwifiex_recycle_cmd_node(adapter, adapter->curr_cmd); 638 adapter->curr_cmd = NULL; 639 } 640 641 /* shut down mwifiex */ 642 mwifiex_dbg(adapter, MSG, 643 "info: shutdown mwifiex...\n"); 644 645 /* Clean up Tx/Rx queues and delete BSS priority table */ 646 for (i = 0; i < adapter->priv_num; i++) { 647 if (adapter->priv[i]) { 648 priv = adapter->priv[i]; 649 650 mwifiex_clean_auto_tdls(priv); 651 mwifiex_abort_cac(priv); 652 mwifiex_free_priv(priv); 653 } 654 } 655 656 atomic_set(&adapter->tx_queued, 0); 657 while ((skb = skb_dequeue(&adapter->tx_data_q))) 658 mwifiex_write_data_complete(adapter, skb, 0, 0); 659 660 spin_lock_bh(&adapter->rx_proc_lock); 661 662 while ((skb = skb_dequeue(&adapter->rx_data_q))) { 663 struct mwifiex_rxinfo *rx_info = MWIFIEX_SKB_RXCB(skb); 664 665 atomic_dec(&adapter->rx_pending); 666 priv = adapter->priv[rx_info->bss_num]; 667 if (priv) 668 priv->stats.rx_dropped++; 669 670 dev_kfree_skb_any(skb); 671 } 672 673 spin_unlock_bh(&adapter->rx_proc_lock); 674 675 mwifiex_adapter_cleanup(adapter); 676 677 adapter->hw_status = MWIFIEX_HW_STATUS_NOT_READY; 678 } 679 680 /* 681 * This function downloads the firmware to the card. 682 * 683 * The actual download is preceded by two sanity checks - 684 * - Check if firmware is already running 685 * - Check if the interface is the winner to download the firmware 686 * 687 * ...and followed by another - 688 * - Check if the firmware is downloaded successfully 689 * 690 * After download is successfully completed, the host interrupts are enabled. 691 */ 692 int mwifiex_dnld_fw(struct mwifiex_adapter *adapter, 693 struct mwifiex_fw_image *pmfw) 694 { 695 int ret; 696 u32 poll_num = 1; 697 698 if (adapter->if_ops.check_fw_status) { 699 /* check if firmware is already running */ 700 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 701 if (!ret) { 702 mwifiex_dbg(adapter, MSG, 703 "WLAN FW already running! Skip FW dnld\n"); 704 return 0; 705 } 706 } 707 708 /* check if we are the winner for downloading FW */ 709 if (adapter->if_ops.check_winner_status) { 710 adapter->winner = 0; 711 ret = adapter->if_ops.check_winner_status(adapter); 712 713 poll_num = MAX_FIRMWARE_POLL_TRIES; 714 if (ret) { 715 mwifiex_dbg(adapter, MSG, 716 "WLAN read winner status failed!\n"); 717 return ret; 718 } 719 720 if (!adapter->winner) { 721 mwifiex_dbg(adapter, MSG, 722 "WLAN is not the winner! Skip FW dnld\n"); 723 goto poll_fw; 724 } 725 } 726 727 if (pmfw) { 728 /* Download firmware with helper */ 729 ret = adapter->if_ops.prog_fw(adapter, pmfw); 730 if (ret) { 731 mwifiex_dbg(adapter, ERROR, 732 "prog_fw failed ret=%#x\n", ret); 733 return ret; 734 } 735 } 736 737 poll_fw: 738 /* Check if the firmware is downloaded successfully or not */ 739 ret = adapter->if_ops.check_fw_status(adapter, poll_num); 740 if (ret) 741 mwifiex_dbg(adapter, ERROR, 742 "FW failed to be active in time\n"); 743 744 return ret; 745 } 746 EXPORT_SYMBOL_GPL(mwifiex_dnld_fw); 747